Jackie said: “I get emotional thinking about it because it could have had a different outcome if it wasn’t for Skye.

“Once it all calmed down, we realised what she had done — she had saved her wee sister’s life.

“Peyton was OK but we checked with her GP and they told us she was lucky.”

Jackie, from Pennyburn, Ayrshire, explained that she had previously attended a first aid course and made sure Skye, now nine, knew the basics.

Jackie, who also another daughter Ava, five with husband Roland, 61, said: “I had spoken to Skye about things I had learned from parents’ groups but I had no idea she knew to slap Peyton’s back like she did.